masonry tools 
The purpose of masonry is to build and repair structures or to cover walls with brick, stone or concrete blocks.
Instrument using a piston mechanism for applying caulking to seal joints and openings.
Conical nozzle forming the end of the cartridge.
Open cylindrical instrument supporting a cartridge.
Trigger controlling the forward motion of the cartridge.
Elbow-shaped shaft with a push stick (piston) that compresses the contents of the cartridge or releases the gun.
Small replaceable reservoir, fitted with a nozzle and containing a malleable, adhesive caulking.
End of the nozzle through which the caulking is applied.